Metal-stamping press.



E. H. VOGEL.

METAL STAMPING PRESS.

APPLICATION IILBD SEPT. 28, 1910.

Patented May 30, 1911.

3 SHEPTE-SHEET 1.

Elm/1 16 ATIOHNEVS r'm' NORRIS PETERS :0 wAsunyai'oN. D. c.

E. H. VOGBL. H METAL STAMPING PRESS.

APPLICATION FILED SEPT. 28, 1910.

3 SHEETS-SHEET 2.

INVENTOR Ewarffl Voyel Patented May 30, 1911.

ATTORNEYS n ts NORRIS PETERS co., WASHINGTON, u. c.

E. H. VOGEL.

METAL STAMPING PRESS.

APPLICATION FILED SEPT. 28, 1910.

99399169 Patented May 30,1911.

3 SHEETS-SHEET 3.

WIT/4158855: I INVENTOR ATTORNEYS in: NORRIS PETERS ca, WASHINGTON, u.c,

UN 1'1 TATE PAT FFKQ.

ERNEST HENRY VOGEL, OF NEW YORK, N. Y., ASSIGNOR OF ONE-HALF TO CONRADMARX, OF NEW YORK, N. Y.

METAL-STAMPING PRESS.

Application filed. September 28, 1910.

To all whom it may concern:

Be it known that I, ERNEST H. VoGEL, a citizen of the United States, anda resident of the city of New York, borough of Brooklyn, in the countyof Kings and State of New York, have invented a new and ImprovedMetal-Stamping Press, of which the following is a full, clear, and exactdescription.

My invention relates to metal stamping pressesthat is, to presses of thekind used for stamping and performing analogous operations, such aspunching, shearing, bending and the like, my more particular purposebeing to provide improved mechanism for increasing the efliciency of themachine, while at the same time promoting simplicity of operation andcheapness of manufacture of the different parts employed.

More particularly stated, my invention coinprehends a number of specificimprovements, among which are the following: I. To provide the presswith double-acting toggle mechanism of approved construction, whereby,without increasing the size of the press, a comparatively long stroke ofthe movable die member is secured. II. To provide improved mechanism forshifting the control of the press, so that it may be actuated eithermanually or by power, as desired. 111. To provide an improved clutch tobe used when the machine is operated by power and controllable by asimple movement of a foot lever for actuating the toggle mechanism inorder to cause the movable die to give a definite thrust. IV. To providevarious mechanical parts whereby the general efficiency of the machineis improved in various ways.

Reference is to be had to the accompanying drawings forming a part ofthis specification, in which similar characters of reference indicatecorresponding parts in all the figures.

Figure 1 is a side elevation, showing my stamping press complete; .Fig.2 is a rear elevation of the pressthat is, showing the press as it wouldbe seen by a person standing at the right of Fig. 1; Fig. 3 is anenlarged fragmentary view, partly in front elevation and partly insection, on the line 33 of Fig. 4 looking in the direction of the arrow;Fig. 4 is a fragmentary view, partly Specification of Letters Patent.

Patented May 30, 1911.

Serial No. 584,368.

in horizontal section and partly in plan, of the parts appearing in Fig.3; and Fig. 5 is an enlarged horizontal section on the line 55 of Fig.1, looking in the direction of the arrow.

Mounted upon a framework 5 is a metallic plate 6, these parts togetherforming practically a heavy table. Mounted rigidly upon the back of thetable 6 and extending backwardly and forwardly therefrom is a largesupport 7 havinggenerally the form of a half arch made of strong metaland provided with an opening 8 to facilitate the accessibility ofvarious parts by the support 7.

At 10 are bearings which are mounted upon opposite sides of the opening8, as will be understood from Fig. 2. These bearings are disposedbetween stationary guides 9 and are held in position by aid of bolts 11which are provided with nuts 12 and with heads 18 (contrast Figs. 2 and3), these bolts extending through slots 14: by aid whereof the bearingsmay receive a slight vertical adjustment. To facilitate in making thisadjustment, I provide adjusting bolts 10 and 10 the bolts extendingthrough ears 10 which are threaded internally for this purpose.

Extending through the bearings 10 and supported thereby is the mainshaft 15 by aid whereof power is supplied to the machine. It will beunderstood, of course, that there may be a number of these machines eachwith its shaft 15, all driven from a single source of power, and that inconnecting up such number of machines the latter are properly balancedin accordance with well known engineering principles.

The support 7 is provided with a hollow extremity 16 (see Figs. 1 and 5)and over this hollow extremity are mounted two hand wheels 17, 18. Thewheel 18 is provided with a threaded stem 19 and the wheel 17 isrevolubly mounted upon the stem 19 forming practically a nut lock forthe same. By turning the wheel 17 a portion of a revolution, thethreaded stem 19 is locked firmly so as to hold it in a predeterminedposition. By turning the h and wheel 17 slightly backward, the stem 19is threaded and may be turned by aid of the hand wheel 18.

A head 20, having a substantially cylindrical form, is mounted withinthe hollow extremity 16 and by aid of a guide bolt 21 is prevented fromturning therein. This guide bolt is provided with a square portion 22serving as a spline and extending into a vertical groove 23. Thethreaded stem 19 is provided at its lower end with a head 24 whichextends through a collar 25, the latter being connected with the head20, the parts thus forming a swivel joint. By turning the wheel 18 so asto raise or lower the stem 19 as it rotates, the head 20 is raised orlowered accordingly and this being done the stem 19 is locked by aid ofthe hand wheel 17, as above described. The head 20 carries a pin 26 andjournaled upon the latter is a link 27 which is held in place by a nut28 (see Fig. 5). These parts are thus arranged to facilitate the removaland replacement of the link 27. This link is connected with another link29 by aid of a pivot pin 30 and below the link 29 is a link 31 which isconnected with it by aid of a pin 32. The link 31 is connected by apivot pin 31 with a sliding head 33. This sliding head is provided withhalf boxes 34 and 35 held together by aid of bolts 36. The head 33carries a bit holder 37, a bolt 38 extending through the bit holder anda nut 39 for actuating the bit holder in order to secure a bit inposition upon the head 33. As many different types of bit holder may beemployed, I do not deem it necessary to describe this part in detail.

The head 33 carries two bearings made up of the half boxes 34, 35, andthese two bearings slidably engage two guide rods 40 which are square incross section and are disposed vertically. The rods 40 are provided attheir upper ends with reduced portions 40 which extend through two ears41 and are fitted with nuts 42. Similarly the lower ends of the guiderods 40 are provided with reduced portions 43 which extend through athickened portion 45 of the table 6 (see Fig. 2) and are secured by aidof nuts 44. A lever 46 is journaled upon a pin 46 carried by the support7, as will be understood from Fig. 1. nected with the upper end of thelever 46 is a link 47. Below this link is another link 48, alsopivotally connected with the lever 46.

The lower end of the lever 46 carries a pin 49 and pivotally connectedwith the latter is an arm 50. This arm has a wide portion 51 which isprovided with a slot 51 Disposed within this slot is a guide block 51which is journaled upon the shaft 15 and which supports the arm 50 whileallowing it freedom to slide in the general direction of its own length.The side portion 51 of the arm 50 carries a plate 52 secured rigidly toit by aid of bolts 52. The arm 50 carries a sleeve 53 which is providedwith a base portion 50 fitting slidably into the Pivotally conslot 51*.A spiral spring 54 is disposed within the sleeve 53 and extendingthrough this spring is a pin 55 having a head 56, the latter beingengaged directly by the spring. Extending through the base portion 50and rigid in relation to the same is a pin 57 upon which is mounted aroller 58.

At 59 is a cam disk which is mounted fixedly upon the shaft 15. At 60 isa roller which is mounted upon a pin 61, the latter being carried by thewide portion 51 of the arm 50. Whenever the main shaft 15 is turned, thecam disk 59 turns with it and alternately pushes the rollers 60, 58outward from the shaft 15 as a center. This causes the arm 50 toreciprocate in the general di rection of its own length. The operator,however, by grasping the sleeve 53 by hand and drawing the sleeve to theright according to Fig. 4, may compress the spring 54 and remove thebase portion 50 from the slot 51. Then, by giving the sleeve 50 aquarter turn, he may cause the base portion 5O to extend directly upwardso that the roller 58 is no longer within reach of the cam disk 59. Thisbeing done, the arm 50 is no longer under control of the shaft 15 andcam disk 59. The purpose of this air rangement will be described below.

Mounted rigidly upon the shaft 15 is a disk 62 carrying a pair of lugs63, 63 integral with it and extending practically across its entireface. Disposed between the lugs 63, 63 is a latch 64. The disk 62 isprovided with a hole 65 and the latch 64 is provided with a somewhatsimilar hole 66. These two holes are in registry with each other andtogether constitute practically a housing for a spring 67 which extendsfrom one hole into the other, as will be understood from Fig. 4. Thespring 67 is of spiral form and tends to press the latch 64 to theright. This latch is mounted at one of its ends upon a pivot pin 68 andswings upon this pin as a center.

Mounted rigidly upon the main shaft 15 is a disk 69 having integral withita hub 70. By aid of a set screw 71 this hub, and consequently the disk69, is secured rigidly to the shaft 15 and rendered revoluble with thesame. The disk 69 carries one or more pins 72 each extendinghorizontally and provided with a reduced portion 63 which extendsdirectly through the disk 69 in order to afford a good anchorage for thepin 72. The support 7 carries a pin 74 (see Fig. 3) and journaled uponthe lat-ter is a lever 75 provided with an upwardly extending portion76, the upper end of which is formed into a latch 77. Partiallyencircling the portion 76 is a shackle 78 which is journaled upon a bolt79 and normally rests against a shoulder 78 Mounted upon the upwardlyextending portion 76 and secured to the same by aid of a bolt 81 isanother shackle 80. A guide rod 82 extends partially into each of theshackles 78, 80 and is encircled by a spiral spring 83. The shackle 80can swing downwardly upon the bolt 81 as a center by compressing thespring 83.

Mounted upon the support 7 is a bracket 84 (see Figs. 3 and 4) which isheld in position by aid of a bolt 85 and is provided with a hole 86. Thebracket 84 is further provided with a slotted head 87 substan tially inregistry with the hole 86, as will be understood from Fig. 4. A stop pin88 extends through the hole 86 in the general direction of thelongitudinal aXis thereof. This pin 88 is provided with a milled head 89and with a lug 90, the latter fitting neatly into the slotted head 87,so as to normally hold the pin 88 in the position indicated in Fig.4-that is, projecting slightly inward from the bracket 84. The operatorby grasping the milled head 89 and pulling the same outwardly, at thesame time turning it, may by compressing the spring partially withdrawthe stop pin 88 so that its free end no longer projects inwardly fromthe bracket 84. With the stop pin 88 thus withdrawn, the latch 76 isfree to swing, but with the stop pin 88 in the position inclicated inFig. 4, the latch 88 can not swing, and consequently the lever 75 cannot be turned upon the pivot pin 74 as a center.

The outer end of the lever 75 is pivotally connected with a pitman 91,the latter being encircled by a spiral spring 92 which rests upon theplate 6 as indicated in Fig. 2, and normally tends to force the pitman91 upward. A treadle 93 is connected with the lower end of the pitman sothat a downward pressure upon the treadle tends to pull the pitman 91downwardly and to compress the spring 92, thus rocking the lever 7 5. At94 is a treadle bar carrying at its lower end a treadle 95 and at itsupper end being mounted to swing upon a pin 96. The treadle bar 94 isprovided with a slot 97 and adjacent to this slotthe arm 50 is providedwith a slot 98.

The operator by thrusting a key through the slots 97, 98 may connect thetreadle bar 94. temporarily with the arm 50, so that by swinging thetreadle 95 the arm 50 may be moved back and forth at will. To do this itis necessary to disconnect the machine from the control of the shaft 15and this is done by moving the roller 58 (see Fig. 4) out of reach ofthe cam disk 59 and into the position indicated by dotted lines in Fig.1.

The operation of my device is as follows: I will suppose at first thatthe machine is to be operated by powerthat is, by rotation of the shaft15. The parts being arranged as above described and the shaft 15 beingcontinuously rotated, the machine is ready for action. The operatorhaving connected a stamping bit or movable die member to the head 33 andarranged a piece of stock below this head, now wishes the head 33 todescend in order that the stock may be operated upon. The op eratorsimply places his foot upon the treadle 93 and depresses this treadle.The pitman 91 is drawn downward, the lever 75 is rocked and the latch 71is moved to the right, according to Fig. 3. The latch 64, under pressureof the spring 67, is now forced to the right accord-ing to Fig. 4,swinging, however, upon the pin 68 as a center. The disk 69 beingrotated continu ously brings the pin 72 against the protruding portionof the latch 64. This causes the disk 62 to turn. The operator havingremoved his foot from the treadle 93, the parts continue to move asdescribed, until a single revolution of the shaft 15 is made.

his being done the latch 64 moves against the adjacent bevel face of theportion 68 and causes the latch 64 to rock back into its normalposition, as indicated in Figs. 3 and 4. That is to say, the latch 64 issimply forced back into its normal position and in so doing compressesthe spring 65, but at the same time the latch 77 is moved for an instantslightly out of its normal position and clicks back again after thelatch 64 is in its own normal position. If the operator keeps thetreadle 93 pressed continuously downward, the machine will make morethan one thrust of the head 33; but under ordinary conditions where onlyone thrust is desired the operator simply depresses the treadle 93 foran instant, then removes his foot and leaves to the machine the task ofmaking a single thrust and no more. Each time the treadle 93 isdepressed, and consequently the disk 62 is caused to make a singlerevolution, as described, the single turn made by the cam disk 59 causesthe arm 50 to be thrust first toward the right, according to Fig. 1, andthen to the left according to said figure. In doing this, the lever 46is rocked once back and forth upon its pivot pin 46 and the links 47 48cause the link 29 to rock similarly to the lever 46. In doing this thereis a toggle action between the links 27, 29 and another toggle action,but in the opposite direction, between the links 29 and 31. The twotoggle actions just mentioned are manifested by a longer thrust downwardof the head 33 than would be the case if a single toggle action alonewere used. Moreover, the toggle levers, links and other parts are muchless apt to be broken if the construction above described be used. Thisis because the strains are distributed to better advantage. Forinstance, by having two links 47, 48 disposed upon opposite sides of thepivot pin 46=-, the strain communicated to the links 27, 29, 31 isconsiderably less than if it were conferred by some arrangement usingonly a single linksay 27 or 48-to transfer power from the lever 46 tothe other parts driven thereby.

\Vhere the machine is driven by power as just described, the sleeve 53(see Fig. 4:) should be in such position that the base portion 50occupies the slot 51. In order to operate the machine by foot power, thefirst step is to disconnect the gearing. This is done as above describedby grasping the sleeve 58, pulling it to the right according to Fig. 4,then giving this sleeve a partial turn, so as to elevate the baseportion 50 and leave the roller 58 extending upwardly as indicated bydotted lines in Fig. l. The rotation of the shaft 15 is now unable toaffect the arm 50 and if the power be cut off and the rotation of theshaft 50 be stopped altogether, the various cams, rollers, disks andother movable parts shown in Fig. 4-, do not act as a load or otherwiseinterfere with the free movement of the toggle mechanism. The gearingbeing disconnected, the next step is to connect the bar 9% with the arm50 and this is done by inserting a key through the slots 97, 98, asabove described. A wooden key may be used for this purpose, if desired.The operator, by placing his foot upon the portion 15 and rocking thebar 94L upon the pin 96 as a center, causes the lever 46 to rock uponits pin a6, and in so doing actuate the toggle mechanism as abovedescribed. To restore the mechanism to its normal condition, all that isnecessary is for the operator to swing the treadle 95 back to its normalposition which is indicated by dotted lines in Fig. 1.

Having thus described my invention, I claim as new and desire to secureby Letters Patent:

1. A device of the character described, comprising a fixed support, alever journaled thereupon, links connected to oppositely disposedportions of said lever, a toggle link extending from one of saidfirstmentioned links to the other, a second toggle link pivotallyconnected with said firstmentioned toggle link and also pivotallyconnected with a normally fixed point, another toggle link pivotallyconnected with said first-mentioned toggle link and also connected witha head, and means controllable at will for rocking said lever.

2. In a metal stamping press, the combination of a support, a normallystationary head carried thereby, a toggle link journaled to said head, asliding head, a toggle link journaled to the same, a third toggle linkournaled at its ends to the other toggle links first-mentioned, a leverdisposed parallel to said first-mentioned toggle link, connections fromsaid lever to the ends of said third-mentioned toggle link, and meanscontrollable at will for rocking said lever.-

3. A device of the character described, comprising toggle mechanism, alever for actuating said toggle mechanism, an arm connected with saidlever for actuating the latter, a revoluble shaft, cam mechanismconnected with said revoluble shaft for actuating said arm, meanscontrollable at will for disconnecting said cam mechanism so as torender said arm idle, a treadle, and means for connecting said treadleto said arm.

4. A device of the character described, comprising a movable head, meansincluding an arm for actuating said movable head, said arm having aslot, a sleeve mounted upon said arm and provided with a base port-ionextending into said slot, a roller mounted upon said base portion andremovable therewith as said base portion is removed from said slot, acam disk engaging said roller, and means for actuating said cam disk.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

ERNEST HENRY VOGEL.

lVitnesses JACOB J. BRAMY, WVILLIAM I. 'VVOLFF.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents; Washington, D. G.

